Originally Posted by Sirfallsalot243
WRONG!!! First of all, the B16B is a CTR head, which comes ported and polished from the factory. That is by far the best head of the three you listed.
Until you show me dyno results proving me otherwise, I've seen the same engine dyno'd with both a B16A and B18C1 head (stock), and the GS-R head made close to an extra 10HP. The B16A head does flow better than either the GS-R or USDM B16A, I do take that back.